Body Systems and Homeostasis

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Across
  1. 10. messenger system in an organism
  2. 11. internal stability while adjusting to change external conditions
  3. 12. single muscle cell
  4. 15. mechanical breakdown of food
  5. 16. organ that makes one or more substance
  6. 17. chemical substances that act like messenger molecules in the body
  7. 19. physically breaking down of substances
  8. 20. takes up oxygen from the air we breathe
Down
  1. 1. product of reaction leads to an increase in the reaction
  2. 2. body can self- regulate
  3. 3. cells that have the ability shorten/contract movement
  4. 4. removes excess and waste products from the body
  5. 5. effects of a reaction slow or stop the reaction
  6. 6. transmits signals to and from the parts of the body
  7. 7. take in food and liquids/break them down
  8. 8. biological occurrence where an output of a system amplifies the system
  9. 9. permits movement of the body, maintains posture, and circulates blood.
  10. 13. contains heart and blood vessels
  11. 14. type of blood vessel
  12. 18. bones that structure the human body